For me it's just the style and some additional features like VPN. I like style abn color spectrum, design elements (in main menu and preferences) and speed deal features. Also, i really like how Opera for Android is working right now. It's fast, stable, with dozen of useful things in it and by using desktop and mobile version together i can sync everything nice and clear.
Old thread But opera is my love just replying here to ask you i use lot's of browsers but opera helps me a lot in different way, It's style color combination and simplicity all the things are best now